This is Waw an Namus, a 1200 metre extinct volcano in the Sahara desert, Libya. The volcano itself is surrounded by a huge area of deposited ash which stands out strikingly against the desert sands. Zoom in closer to see some spectacular colours. You can really see which way the prevailing wind blows around here, huh? A couple of hundred kilometres to the north you can see an absolutely vast basaltic lava flow field, known as Djebel Haroudj. If you take a broader look at the area, I think you can still make out the path the lava…